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Teoria: https://itp.nyu.edu/physcomp/lessons/serial-communication/serial-communication-the-basics/
+- https://learn.sparkfun.com/tutorials/serial-communication
- https://itp.nyu.edu/physcomp/labs/labs-serial-communication/serial-output-from-an-arduino/
I2C
=======
+Arduino: master Reader http://www.arduino.cc/en/Tutorial/MasterReader
+
I2C Teoria: https://learn.sparkfun.com/tutorials/i2c
Pratica: http://jamesreubenknowles.com/arduino-i2c-1680